Line data Source code
1 : // Copyright 2012 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #ifndef V8_COUNTERS_H_
6 : #define V8_COUNTERS_H_
7 :
8 : #include "include/v8.h"
9 : #include "src/allocation.h"
10 : #include "src/base/atomic-utils.h"
11 : #include "src/base/optional.h"
12 : #include "src/base/platform/elapsed-timer.h"
13 : #include "src/base/platform/time.h"
14 : #include "src/globals.h"
15 : #include "src/heap-symbols.h"
16 : #include "src/isolate.h"
17 : #include "src/objects.h"
18 : #include "src/runtime/runtime.h"
19 : #include "src/tracing/trace-event.h"
20 : #include "src/tracing/traced-value.h"
21 : #include "src/tracing/tracing-category-observer.h"
22 :
23 : namespace v8 {
24 : namespace internal {
25 :
26 : // StatsCounters is an interface for plugging into external
27 : // counters for monitoring. Counters can be looked up and
28 : // manipulated by name.
29 :
30 : class Counters;
31 :
32 : class StatsTable {
33 : public:
34 : // Register an application-defined function for recording
35 : // subsequent counter statistics.
36 : void SetCounterFunction(CounterLookupCallback f);
37 :
38 : // Register an application-defined function to create histograms for
39 : // recording subsequent histogram samples.
40 : void SetCreateHistogramFunction(CreateHistogramCallback f) {
41 8 : create_histogram_function_ = f;
42 : }
43 :
44 : // Register an application-defined function to add a sample
45 : // to a histogram created with CreateHistogram function.
46 : void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
47 8 : add_histogram_sample_function_ = f;
48 : }
49 :
50 : bool HasCounterFunction() const { return lookup_function_ != nullptr; }
51 :
52 : // Lookup the location of a counter by name. If the lookup
53 : // is successful, returns a non-nullptr pointer for writing the
54 : // value of the counter. Each thread calling this function
55 : // may receive a different location to store it's counter.
56 : // The return value must not be cached and re-used across
57 : // threads, although a single thread is free to cache it.
58 : int* FindLocation(const char* name) {
59 1143334 : if (!lookup_function_) return nullptr;
60 0 : return lookup_function_(name);
61 : }
62 :
63 : // Create a histogram by name. If the create is successful,
64 : // returns a non-nullptr pointer for use with AddHistogramSample
65 : // function. min and max define the expected minimum and maximum
66 : // sample values. buckets is the maximum number of buckets
67 : // that the samples will be grouped into.
68 : void* CreateHistogram(const char* name,
69 : int min,
70 : int max,
71 : size_t buckets) {
72 840 : if (!create_histogram_function_) return nullptr;
73 315 : return create_histogram_function_(name, min, max, buckets);
74 : }
75 :
76 : // Add a sample to a histogram created with the CreateHistogram
77 : // function.
78 : void AddHistogramSample(void* histogram, int sample) {
79 10 : if (!add_histogram_sample_function_) return;
80 10 : return add_histogram_sample_function_(histogram, sample);
81 : }
82 :
83 : private:
84 : friend class Counters;
85 :
86 : explicit StatsTable(Counters* counters);
87 :
88 : CounterLookupCallback lookup_function_;
89 : CreateHistogramCallback create_histogram_function_;
90 : AddHistogramSampleCallback add_histogram_sample_function_;
91 :
92 : DISALLOW_COPY_AND_ASSIGN(StatsTable);
93 : };
94 :
95 : // Base class for stats counters.
96 : class StatsCounterBase {
97 : protected:
98 : Counters* counters_;
99 : const char* name_;
100 : int* ptr_;
101 :
102 : StatsCounterBase() = default;
103 : StatsCounterBase(Counters* counters, const char* name)
104 305245 : : counters_(counters), name_(name), ptr_(nullptr) {}
105 :
106 0 : void SetLoc(int* loc, int value) { *loc = value; }
107 0 : void IncrementLoc(int* loc) { (*loc)++; }
108 0 : void IncrementLoc(int* loc, int value) { (*loc) += value; }
109 0 : void DecrementLoc(int* loc) { (*loc)--; }
110 0 : void DecrementLoc(int* loc, int value) { (*loc) -= value; }
111 :
112 : int* FindLocationInStatsTable() const;
113 : };
114 :
115 : // StatsCounters are dynamically created values which can be tracked in
116 : // the StatsTable. They are designed to be lightweight to create and
117 : // easy to use.
118 : //
119 : // Internally, a counter represents a value in a row of a StatsTable.
120 : // The row has a 32bit value for each process/thread in the table and also
121 : // a name (stored in the table metadata). Since the storage location can be
122 : // thread-specific, this class cannot be shared across threads. Note: This
123 : // class is not thread safe.
124 : class StatsCounter : public StatsCounterBase {
125 : public:
126 : // Sets the counter to a specific value.
127 1936510 : void Set(int value) {
128 1936510 : if (int* loc = GetPtr()) SetLoc(loc, value);
129 1936510 : }
130 :
131 : // Increments the counter.
132 175775909 : void Increment() {
133 175775909 : if (int* loc = GetPtr()) IncrementLoc(loc);
134 175775909 : }
135 :
136 18942683 : void Increment(int value) {
137 18942684 : if (int* loc = GetPtr()) IncrementLoc(loc, value);
138 18942684 : }
139 :
140 : // Decrements the counter.
141 6089319 : void Decrement() {
142 6089319 : if (int* loc = GetPtr()) DecrementLoc(loc);
143 6089319 : }
144 :
145 1096538 : void Decrement(int value) {
146 1096538 : if (int* loc = GetPtr()) DecrementLoc(loc, value);
147 1096538 : }
148 :
149 : // Is this counter enabled?
150 : // Returns false if table is full.
151 0 : bool Enabled() { return GetPtr() != nullptr; }
152 :
153 : // Get the internal pointer to the counter. This is used
154 : // by the code generator to emit code that manipulates a
155 : // given counter without calling the runtime system.
156 : int* GetInternalPointer() {
157 : int* loc = GetPtr();
158 : DCHECK_NOT_NULL(loc);
159 : return loc;
160 : }
161 :
162 : private:
163 : friend class Counters;
164 :
165 : StatsCounter() = default;
166 : StatsCounter(Counters* counters, const char* name)
167 : : StatsCounterBase(counters, name), lookup_done_(false) {}
168 :
169 : // Reset the cached internal pointer.
170 10 : void Reset() { lookup_done_ = false; }
171 :
172 : // Returns the cached address of this counter location.
173 0 : int* GetPtr() {
174 203840959 : if (lookup_done_) return ptr_;
175 1143309 : lookup_done_ = true;
176 1143309 : ptr_ = FindLocationInStatsTable();
177 0 : return ptr_;
178 : }
179 :
180 : bool lookup_done_;
181 : };
182 :
183 : // Thread safe version of StatsCounter.
184 61034 : class StatsCounterThreadSafe : public StatsCounterBase {
185 : public:
186 : void Set(int Value);
187 : void Increment();
188 : void Increment(int value);
189 : void Decrement();
190 : void Decrement(int value);
191 : bool Enabled() { return ptr_ != nullptr; }
192 : int* GetInternalPointer() {
193 : DCHECK_NOT_NULL(ptr_);
194 : return ptr_;
195 : }
196 :
197 : private:
198 : friend class Counters;
199 :
200 : StatsCounterThreadSafe(Counters* counters, const char* name);
201 25 : void Reset() { ptr_ = FindLocationInStatsTable(); }
202 :
203 : base::Mutex mutex_;
204 :
205 : DISALLOW_IMPLICIT_CONSTRUCTORS(StatsCounterThreadSafe);
206 : };
207 :
208 : // A Histogram represents a dynamically created histogram in the
209 : // StatsTable. Note: This class is thread safe.
210 : class Histogram {
211 : public:
212 : // Add a single sample to this histogram.
213 : void AddSample(int sample);
214 :
215 : // Returns true if this histogram is enabled.
216 : bool Enabled() { return histogram_ != nullptr; }
217 :
218 : const char* name() { return name_; }
219 :
220 : int min() const { return min_; }
221 : int max() const { return max_; }
222 : int num_buckets() const { return num_buckets_; }
223 :
224 : // Asserts that |expected_counters| are the same as the Counters this
225 : // Histogram reports to.
226 : void AssertReportsToCounters(Counters* expected_counters) {
227 : DCHECK_EQ(counters_, expected_counters);
228 : }
229 :
230 : protected:
231 : Histogram() = default;
232 : Histogram(const char* name, int min, int max, int num_buckets,
233 : Counters* counters)
234 : : name_(name),
235 : min_(min),
236 : max_(max),
237 : num_buckets_(num_buckets),
238 : histogram_(nullptr),
239 5 : counters_(counters) {
240 : DCHECK(counters_);
241 : }
242 :
243 : Counters* counters() const { return counters_; }
244 :
245 : // Reset the cached internal pointer.
246 1680 : void Reset() { histogram_ = CreateHistogram(); }
247 :
248 : private:
249 : friend class Counters;
250 :
251 : void* CreateHistogram() const;
252 :
253 : const char* name_;
254 : int min_;
255 : int max_;
256 : int num_buckets_;
257 : void* histogram_;
258 : Counters* counters_;
259 : };
260 :
261 : enum class HistogramTimerResolution { MILLISECOND, MICROSECOND };
262 :
263 : // A thread safe histogram timer. It also allows distributions of
264 : // nested timed results.
265 : class TimedHistogram : public Histogram {
266 : public:
267 : // Start the timer. Log if isolate non-null.
268 : void Start(base::ElapsedTimer* timer, Isolate* isolate);
269 :
270 : // Stop the timer and record the results. Log if isolate non-null.
271 : void Stop(base::ElapsedTimer* timer, Isolate* isolate);
272 :
273 : // Records a TimeDelta::Max() result. Useful to record percentage of tasks
274 : // that never got to run in a given scenario. Log if isolate non-null.
275 : void RecordAbandon(base::ElapsedTimer* timer, Isolate* isolate);
276 :
277 : protected:
278 : friend class Counters;
279 : HistogramTimerResolution resolution_;
280 :
281 : TimedHistogram() = default;
282 : TimedHistogram(const char* name, int min, int max,
283 : HistogramTimerResolution resolution, int num_buckets,
284 : Counters* counters)
285 : : Histogram(name, min, max, num_buckets, counters),
286 5 : resolution_(resolution) {}
287 : void AddTimeSample();
288 : };
289 :
290 : // Helper class for scoping a TimedHistogram.
291 : class TimedHistogramScope {
292 : public:
293 : explicit TimedHistogramScope(TimedHistogram* histogram,
294 : Isolate* isolate = nullptr)
295 2475325 : : histogram_(histogram), isolate_(isolate) {
296 2475325 : histogram_->Start(&timer_, isolate);
297 : }
298 :
299 2475047 : ~TimedHistogramScope() { histogram_->Stop(&timer_, isolate_); }
300 :
301 : private:
302 : base::ElapsedTimer timer_;
303 : TimedHistogram* histogram_;
304 : Isolate* isolate_;
305 :
306 : DISALLOW_IMPLICIT_CONSTRUCTORS(TimedHistogramScope);
307 : };
308 :
309 : enum class OptionalTimedHistogramScopeMode { TAKE_TIME, DONT_TAKE_TIME };
310 :
311 : // Helper class for scoping a TimedHistogram.
312 : // It will not take time for mode = DONT_TAKE_TIME.
313 : class OptionalTimedHistogramScope {
314 : public:
315 : OptionalTimedHistogramScope(TimedHistogram* histogram, Isolate* isolate,
316 : OptionalTimedHistogramScopeMode mode)
317 98000 : : histogram_(histogram), isolate_(isolate), mode_(mode) {
318 98000 : if (mode == OptionalTimedHistogramScopeMode::TAKE_TIME) {
319 98000 : histogram_->Start(&timer_, isolate);
320 : }
321 : }
322 :
323 98000 : ~OptionalTimedHistogramScope() {
324 98000 : if (mode_ == OptionalTimedHistogramScopeMode::TAKE_TIME) {
325 98000 : histogram_->Stop(&timer_, isolate_);
326 : }
327 98000 : }
328 :
329 : private:
330 : base::ElapsedTimer timer_;
331 : TimedHistogram* const histogram_;
332 : Isolate* const isolate_;
333 : const OptionalTimedHistogramScopeMode mode_;
334 : DISALLOW_IMPLICIT_CONSTRUCTORS(OptionalTimedHistogramScope);
335 : };
336 :
337 : // Helper class for recording a TimedHistogram asynchronously with manual
338 : // controls (it will not generate a report if destroyed without explicitly
339 : // triggering a report). |async_counters| should be a shared_ptr to
340 : // |histogram->counters()|, making it is safe to report to an
341 : // AsyncTimedHistogram after the associated isolate has been destroyed.
342 : // AsyncTimedHistogram can be moved/copied to avoid computing Now() multiple
343 : // times when the times of multiple tasks are identical; each copy will generate
344 : // its own report.
345 : class AsyncTimedHistogram {
346 : public:
347 : explicit AsyncTimedHistogram(TimedHistogram* histogram,
348 : std::shared_ptr<Counters> async_counters)
349 : : histogram_(histogram), async_counters_(std::move(async_counters)) {
350 : histogram_->AssertReportsToCounters(async_counters_.get());
351 : histogram_->Start(&timer_, nullptr);
352 : }
353 :
354 : // Records the time elapsed to |histogram_| and stops |timer_|.
355 : void RecordDone() { histogram_->Stop(&timer_, nullptr); }
356 :
357 : // Records TimeDelta::Max() to |histogram_| and stops |timer_|.
358 : void RecordAbandon() { histogram_->RecordAbandon(&timer_, nullptr); }
359 :
360 : private:
361 : base::ElapsedTimer timer_;
362 : TimedHistogram* histogram_;
363 : std::shared_ptr<Counters> async_counters_;
364 : };
365 :
366 : // Helper class for scoping a TimedHistogram, where the histogram is selected at
367 : // stop time rather than start time.
368 : // TODO(leszeks): This is heavily reliant on TimedHistogram::Start() doing
369 : // nothing but starting the timer, and TimedHistogram::Stop() logging the sample
370 : // correctly even if Start() was not called. This happens to be true iff Stop()
371 : // is passed a null isolate, but that's an implementation detail of
372 : // TimedHistogram, and we shouldn't rely on it.
373 : class LazyTimedHistogramScope {
374 : public:
375 284650 : LazyTimedHistogramScope() : histogram_(nullptr) { timer_.Start(); }
376 : ~LazyTimedHistogramScope() {
377 : // We should set the histogram before this scope exits.
378 : DCHECK_NOT_NULL(histogram_);
379 284651 : histogram_->Stop(&timer_, nullptr);
380 : }
381 :
382 284652 : void set_histogram(TimedHistogram* histogram) { histogram_ = histogram; }
383 :
384 : private:
385 : base::ElapsedTimer timer_;
386 : TimedHistogram* histogram_;
387 : };
388 :
389 : // A HistogramTimer allows distributions of non-nested timed results
390 : // to be created. WARNING: This class is not thread safe and can only
391 : // be run on the foreground thread.
392 : class HistogramTimer : public TimedHistogram {
393 : public:
394 : // Note: public for testing purposes only.
395 : HistogramTimer(const char* name, int min, int max,
396 : HistogramTimerResolution resolution, int num_buckets,
397 : Counters* counters)
398 5 : : TimedHistogram(name, min, max, resolution, num_buckets, counters) {}
399 :
400 : inline void Start();
401 : inline void Stop();
402 :
403 : // Returns true if the timer is running.
404 : bool Running() {
405 : return Enabled() && timer_.IsStarted();
406 : }
407 :
408 : // TODO(bmeurer): Remove this when HistogramTimerScope is fixed.
409 : #ifdef DEBUG
410 : base::ElapsedTimer* timer() { return &timer_; }
411 : #endif
412 :
413 : private:
414 : friend class Counters;
415 :
416 : base::ElapsedTimer timer_;
417 :
418 61049 : HistogramTimer() = default;
419 : };
420 :
421 : // Helper class for scoping a HistogramTimer.
422 : // TODO(bmeurer): The ifdeffery is an ugly hack around the fact that the
423 : // Parser is currently reentrant (when it throws an error, we call back
424 : // into JavaScript and all bets are off), but ElapsedTimer is not
425 : // reentry-safe. Fix this properly and remove |allow_nesting|.
426 : class HistogramTimerScope {
427 : public:
428 : explicit HistogramTimerScope(HistogramTimer* timer,
429 : bool allow_nesting = false)
430 : #ifdef DEBUG
431 : : timer_(timer), skipped_timer_start_(false) {
432 : if (timer_->timer()->IsStarted() && allow_nesting) {
433 : skipped_timer_start_ = true;
434 : } else {
435 : timer_->Start();
436 : }
437 : }
438 : #else
439 284653 : : timer_(timer) {
440 : timer_->Start();
441 : }
442 : #endif
443 : ~HistogramTimerScope() {
444 : #ifdef DEBUG
445 : if (!skipped_timer_start_) {
446 : timer_->Stop();
447 : }
448 : #else
449 284652 : timer_->Stop();
450 : #endif
451 : }
452 :
453 : private:
454 : HistogramTimer* timer_;
455 : #ifdef DEBUG
456 : bool skipped_timer_start_;
457 : #endif
458 : };
459 :
460 : // A histogram timer that can aggregate events within a larger scope.
461 : //
462 : // Intended use of this timer is to have an outer (aggregating) and an inner
463 : // (to be aggregated) scope, where the inner scope measure the time of events,
464 : // and all those inner scope measurements will be summed up by the outer scope.
465 : // An example use might be to aggregate the time spent in lazy compilation
466 : // while running a script.
467 : //
468 : // Helpers:
469 : // - AggregatingHistogramTimerScope, the "outer" scope within which
470 : // times will be summed up.
471 : // - AggregatedHistogramTimerScope, the "inner" scope which defines the
472 : // events to be timed.
473 : class AggregatableHistogramTimer : public Histogram {
474 : public:
475 : // Start/stop the "outer" scope.
476 267706 : void Start() { time_ = base::TimeDelta(); }
477 267706 : void Stop() {
478 267706 : if (time_ != base::TimeDelta()) {
479 : // Only add non-zero samples, since zero samples represent situations
480 : // where there were no aggregated samples added.
481 44632 : AddSample(static_cast<int>(time_.InMicroseconds()));
482 : }
483 267706 : }
484 :
485 : // Add a time value ("inner" scope).
486 : void Add(base::TimeDelta other) { time_ += other; }
487 :
488 : private:
489 : friend class Counters;
490 :
491 61049 : AggregatableHistogramTimer() = default;
492 : AggregatableHistogramTimer(const char* name, int min, int max,
493 : int num_buckets, Counters* counters)
494 : : Histogram(name, min, max, num_buckets, counters) {}
495 :
496 : base::TimeDelta time_;
497 : };
498 :
499 : // A helper class for use with AggregatableHistogramTimer. This is the
500 : // // outer-most timer scope used with an AggregatableHistogramTimer. It will
501 : // // aggregate the information from the inner AggregatedHistogramTimerScope.
502 : class AggregatingHistogramTimerScope {
503 : public:
504 : explicit AggregatingHistogramTimerScope(AggregatableHistogramTimer* histogram)
505 : : histogram_(histogram) {
506 : histogram_->Start();
507 : }
508 267706 : ~AggregatingHistogramTimerScope() { histogram_->Stop(); }
509 :
510 : private:
511 : AggregatableHistogramTimer* histogram_;
512 : };
513 :
514 : // A helper class for use with AggregatableHistogramTimer, the "inner" scope
515 : // // which defines the events to be timed.
516 : class AggregatedHistogramTimerScope {
517 : public:
518 : explicit AggregatedHistogramTimerScope(AggregatableHistogramTimer* histogram)
519 558168 : : histogram_(histogram) {
520 : timer_.Start();
521 : }
522 1674507 : ~AggregatedHistogramTimerScope() { histogram_->Add(timer_.Elapsed()); }
523 :
524 : private:
525 : base::ElapsedTimer timer_;
526 : AggregatableHistogramTimer* histogram_;
527 : };
528 :
529 :
530 : // AggretatedMemoryHistogram collects (time, value) sample pairs and turns
531 : // them into time-uniform samples for the backing historgram, such that the
532 : // backing histogram receives one sample every T ms, where the T is controlled
533 : // by the FLAG_histogram_interval.
534 : //
535 : // More formally: let F be a real-valued function that maps time to sample
536 : // values. We define F as a linear interpolation between adjacent samples. For
537 : // each time interval [x; x + T) the backing histogram gets one sample value
538 : // that is the average of F(t) in the interval.
539 : template <typename Histogram>
540 : class AggregatedMemoryHistogram {
541 : public:
542 : // Note: public for testing purposes only.
543 : explicit AggregatedMemoryHistogram(Histogram* backing_histogram)
544 : : AggregatedMemoryHistogram() {
545 14 : backing_histogram_ = backing_histogram;
546 : }
547 :
548 : // Invariants that hold before and after AddSample if
549 : // is_initialized_ is true:
550 : //
551 : // 1) For we processed samples that came in before start_ms_ and sent the
552 : // corresponding aggregated samples to backing histogram.
553 : // 2) (last_ms_, last_value_) is the last received sample.
554 : // 3) last_ms_ < start_ms_ + FLAG_histogram_interval.
555 : // 4) aggregate_value_ is the average of the function that is constructed by
556 : // linearly interpolating samples received between start_ms_ and last_ms_.
557 : void AddSample(double current_ms, double current_value);
558 :
559 : private:
560 : friend class Counters;
561 :
562 : AggregatedMemoryHistogram()
563 : : is_initialized_(false),
564 : start_ms_(0.0),
565 : last_ms_(0.0),
566 : aggregate_value_(0.0),
567 : last_value_(0.0),
568 14 : backing_histogram_(nullptr) {}
569 : double Aggregate(double current_ms, double current_value);
570 :
571 : bool is_initialized_;
572 : double start_ms_;
573 : double last_ms_;
574 : double aggregate_value_;
575 : double last_value_;
576 : Histogram* backing_histogram_;
577 : };
578 :
579 :
580 : template <typename Histogram>
581 39 : void AggregatedMemoryHistogram<Histogram>::AddSample(double current_ms,
582 : double current_value) {
583 39 : if (!is_initialized_) {
584 14 : aggregate_value_ = current_value;
585 14 : start_ms_ = current_ms;
586 14 : last_value_ = current_value;
587 14 : last_ms_ = current_ms;
588 14 : is_initialized_ = true;
589 : } else {
590 : const double kEpsilon = 1e-6;
591 : const int kMaxSamples = 1000;
592 25 : if (current_ms < last_ms_ + kEpsilon) {
593 : // Two samples have the same time, remember the last one.
594 2 : last_value_ = current_value;
595 : } else {
596 23 : double sample_interval_ms = FLAG_histogram_interval;
597 23 : double end_ms = start_ms_ + sample_interval_ms;
598 23 : if (end_ms <= current_ms + kEpsilon) {
599 : // Linearly interpolate between the last_ms_ and the current_ms.
600 18 : double slope = (current_value - last_value_) / (current_ms - last_ms_);
601 : int i;
602 : // Send aggregated samples to the backing histogram from the start_ms
603 : // to the current_ms.
604 2038 : for (i = 0; i < kMaxSamples && end_ms <= current_ms + kEpsilon; i++) {
605 2020 : double end_value = last_value_ + (end_ms - last_ms_) * slope;
606 : double sample_value;
607 2020 : if (i == 0) {
608 : // Take aggregate_value_ into account.
609 : sample_value = Aggregate(end_ms, end_value);
610 : } else {
611 : // There is no aggregate_value_ for i > 0.
612 2002 : sample_value = (last_value_ + end_value) / 2;
613 : }
614 2020 : backing_histogram_->AddSample(static_cast<int>(sample_value + 0.5));
615 2020 : last_value_ = end_value;
616 2020 : last_ms_ = end_ms;
617 2020 : end_ms += sample_interval_ms;
618 : }
619 18 : if (i == kMaxSamples) {
620 : // We hit the sample limit, ignore the remaining samples.
621 2 : aggregate_value_ = current_value;
622 2 : start_ms_ = current_ms;
623 : } else {
624 16 : aggregate_value_ = last_value_;
625 16 : start_ms_ = last_ms_;
626 : }
627 : }
628 39 : aggregate_value_ = current_ms > start_ms_ + kEpsilon
629 : ? Aggregate(current_ms, current_value)
630 : : aggregate_value_;
631 23 : last_value_ = current_value;
632 23 : last_ms_ = current_ms;
633 : }
634 : }
635 39 : }
636 :
637 :
638 : template <typename Histogram>
639 : double AggregatedMemoryHistogram<Histogram>::Aggregate(double current_ms,
640 : double current_value) {
641 25 : double interval_ms = current_ms - start_ms_;
642 25 : double value = (current_value + last_value_) / 2;
643 : // The aggregate_value_ is the average for [start_ms_; last_ms_].
644 : // The value is the average for [last_ms_; current_ms].
645 : // Return the weighted average of the aggregate_value_ and the value.
646 : return aggregate_value_ * ((last_ms_ - start_ms_) / interval_ms) +
647 25 : value * ((current_ms - last_ms_) / interval_ms);
648 : }
649 :
650 : class RuntimeCallCounter final {
651 : public:
652 : RuntimeCallCounter() : RuntimeCallCounter(nullptr) {}
653 : explicit RuntimeCallCounter(const char* name)
654 71681588 : : name_(name), count_(0), time_(0) {}
655 : V8_NOINLINE void Reset();
656 : V8_NOINLINE void Dump(v8::tracing::TracedValue* value);
657 : void Add(RuntimeCallCounter* other);
658 :
659 : const char* name() const { return name_; }
660 : int64_t count() const { return count_; }
661 : base::TimeDelta time() const {
662 : return base::TimeDelta::FromMicroseconds(time_);
663 : }
664 27437 : void Increment() { count_++; }
665 27444 : void Add(base::TimeDelta delta) { time_ += delta.InMicroseconds(); }
666 :
667 : private:
668 : friend class RuntimeCallStats;
669 :
670 : const char* name_;
671 : int64_t count_;
672 : // Stored as int64_t so that its initialization can be deferred.
673 : int64_t time_;
674 : };
675 :
676 : // RuntimeCallTimer is used to keep track of the stack of currently active
677 : // timers used for properly measuring the own time of a RuntimeCallCounter.
678 363785342 : class RuntimeCallTimer final {
679 : public:
680 : RuntimeCallCounter* counter() { return counter_; }
681 13 : void set_counter(RuntimeCallCounter* counter) { counter_ = counter; }
682 : RuntimeCallTimer* parent() const { return parent_.Value(); }
683 : void set_parent(RuntimeCallTimer* timer) { parent_.SetValue(timer); }
684 : const char* name() const { return counter_->name(); }
685 :
686 : inline bool IsStarted();
687 :
688 : inline void Start(RuntimeCallCounter* counter, RuntimeCallTimer* parent);
689 : void Snapshot();
690 : inline RuntimeCallTimer* Stop();
691 :
692 : // Make the time source configurable for testing purposes.
693 : V8_EXPORT_PRIVATE static base::TimeTicks (*Now)();
694 :
695 : private:
696 : inline void Pause(base::TimeTicks now);
697 : inline void Resume(base::TimeTicks now);
698 : inline void CommitTimeToCounter();
699 :
700 : RuntimeCallCounter* counter_ = nullptr;
701 : base::AtomicValue<RuntimeCallTimer*> parent_;
702 : base::TimeTicks start_ticks_;
703 : base::TimeDelta elapsed_;
704 : };
705 :
706 : #define FOR_EACH_GC_COUNTER(V) \
707 : TRACER_SCOPES(V) \
708 : TRACER_BACKGROUND_SCOPES(V)
709 :
710 : #define FOR_EACH_API_COUNTER(V) \
711 : V(ArrayBuffer_Cast) \
712 : V(ArrayBuffer_Detach) \
713 : V(ArrayBuffer_New) \
714 : V(Array_CloneElementAt) \
715 : V(Array_New) \
716 : V(BigInt64Array_New) \
717 : V(BigInt_NewFromWords) \
718 : V(BigIntObject_BigIntValue) \
719 : V(BigIntObject_New) \
720 : V(BigUint64Array_New) \
721 : V(BooleanObject_BooleanValue) \
722 : V(BooleanObject_New) \
723 : V(Context_New) \
724 : V(Context_NewRemoteContext) \
725 : V(DataView_New) \
726 : V(Date_DateTimeConfigurationChangeNotification) \
727 : V(Date_New) \
728 : V(Date_NumberValue) \
729 : V(Debug_Call) \
730 : V(Error_New) \
731 : V(External_New) \
732 : V(Float32Array_New) \
733 : V(Float64Array_New) \
734 : V(Function_Call) \
735 : V(Function_New) \
736 : V(Function_NewInstance) \
737 : V(FunctionTemplate_GetFunction) \
738 : V(FunctionTemplate_New) \
739 : V(FunctionTemplate_NewRemoteInstance) \
740 : V(FunctionTemplate_NewWithCache) \
741 : V(FunctionTemplate_NewWithFastHandler) \
742 : V(Int16Array_New) \
743 : V(Int32Array_New) \
744 : V(Int8Array_New) \
745 : V(JSON_Parse) \
746 : V(JSON_Stringify) \
747 : V(Map_AsArray) \
748 : V(Map_Clear) \
749 : V(Map_Delete) \
750 : V(Map_Get) \
751 : V(Map_Has) \
752 : V(Map_New) \
753 : V(Map_Set) \
754 : V(Message_GetEndColumn) \
755 : V(Message_GetLineNumber) \
756 : V(Message_GetSourceLine) \
757 : V(Message_GetStartColumn) \
758 : V(Module_Evaluate) \
759 : V(Module_InstantiateModule) \
760 : V(NumberObject_New) \
761 : V(NumberObject_NumberValue) \
762 : V(Object_CallAsConstructor) \
763 : V(Object_CallAsFunction) \
764 : V(Object_CreateDataProperty) \
765 : V(Object_DefineOwnProperty) \
766 : V(Object_DefineProperty) \
767 : V(Object_Delete) \
768 : V(Object_DeleteProperty) \
769 : V(Object_ForceSet) \
770 : V(Object_Get) \
771 : V(Object_GetOwnPropertyDescriptor) \
772 : V(Object_GetOwnPropertyNames) \
773 : V(Object_GetPropertyAttributes) \
774 : V(Object_GetPropertyNames) \
775 : V(Object_GetRealNamedProperty) \
776 : V(Object_GetRealNamedPropertyAttributes) \
777 : V(Object_GetRealNamedPropertyAttributesInPrototypeChain) \
778 : V(Object_GetRealNamedPropertyInPrototypeChain) \
779 : V(Object_Has) \
780 : V(Object_HasOwnProperty) \
781 : V(Object_HasRealIndexedProperty) \
782 : V(Object_HasRealNamedCallbackProperty) \
783 : V(Object_HasRealNamedProperty) \
784 : V(Object_New) \
785 : V(Object_ObjectProtoToString) \
786 : V(Object_Set) \
787 : V(Object_SetAccessor) \
788 : V(Object_SetIntegrityLevel) \
789 : V(Object_SetPrivate) \
790 : V(Object_SetPrototype) \
791 : V(ObjectTemplate_New) \
792 : V(ObjectTemplate_NewInstance) \
793 : V(Object_ToArrayIndex) \
794 : V(Object_ToBigInt) \
795 : V(Object_ToDetailString) \
796 : V(Object_ToInt32) \
797 : V(Object_ToInteger) \
798 : V(Object_ToNumber) \
799 : V(Object_ToObject) \
800 : V(Object_ToString) \
801 : V(Object_ToUint32) \
802 : V(Persistent_New) \
803 : V(Private_New) \
804 : V(Promise_Catch) \
805 : V(Promise_Chain) \
806 : V(Promise_HasRejectHandler) \
807 : V(Promise_Resolver_New) \
808 : V(Promise_Resolver_Reject) \
809 : V(Promise_Resolver_Resolve) \
810 : V(Promise_Result) \
811 : V(Promise_Status) \
812 : V(Promise_Then) \
813 : V(Proxy_New) \
814 : V(RangeError_New) \
815 : V(ReferenceError_New) \
816 : V(RegExp_New) \
817 : V(ScriptCompiler_Compile) \
818 : V(ScriptCompiler_CompileFunctionInContext) \
819 : V(ScriptCompiler_CompileUnbound) \
820 : V(Script_Run) \
821 : V(Set_Add) \
822 : V(Set_AsArray) \
823 : V(Set_Clear) \
824 : V(Set_Delete) \
825 : V(Set_Has) \
826 : V(Set_New) \
827 : V(SharedArrayBuffer_New) \
828 : V(String_Concat) \
829 : V(String_NewExternalOneByte) \
830 : V(String_NewExternalTwoByte) \
831 : V(String_NewFromOneByte) \
832 : V(String_NewFromTwoByte) \
833 : V(String_NewFromUtf8) \
834 : V(StringObject_New) \
835 : V(StringObject_StringValue) \
836 : V(String_Write) \
837 : V(String_WriteUtf8) \
838 : V(Symbol_New) \
839 : V(SymbolObject_New) \
840 : V(SymbolObject_SymbolValue) \
841 : V(SyntaxError_New) \
842 : V(TracedGlobal_New) \
843 : V(TryCatch_StackTrace) \
844 : V(TypeError_New) \
845 : V(Uint16Array_New) \
846 : V(Uint32Array_New) \
847 : V(Uint8Array_New) \
848 : V(Uint8ClampedArray_New) \
849 : V(UnboundScript_GetId) \
850 : V(UnboundScript_GetLineNumber) \
851 : V(UnboundScript_GetName) \
852 : V(UnboundScript_GetSourceMappingURL) \
853 : V(UnboundScript_GetSourceURL) \
854 : V(ValueDeserializer_ReadHeader) \
855 : V(ValueDeserializer_ReadValue) \
856 : V(ValueSerializer_WriteValue) \
857 : V(Value_InstanceOf) \
858 : V(Value_Int32Value) \
859 : V(Value_IntegerValue) \
860 : V(Value_NumberValue) \
861 : V(Value_TypeOf) \
862 : V(Value_Uint32Value) \
863 : V(WeakMap_Get) \
864 : V(WeakMap_New) \
865 : V(WeakMap_Set)
866 :
867 : #define FOR_EACH_MANUAL_COUNTER(V) \
868 : V(AccessorGetterCallback) \
869 : V(AccessorSetterCallback) \
870 : V(ArrayLengthGetter) \
871 : V(ArrayLengthSetter) \
872 : V(BoundFunctionLengthGetter) \
873 : V(BoundFunctionNameGetter) \
874 : V(CompileAnalyse) \
875 : V(CompileBackgroundAnalyse) \
876 : V(CompileBackgroundCompileTask) \
877 : V(CompileBackgroundEval) \
878 : V(CompileBackgroundFunction) \
879 : V(CompileBackgroundIgnition) \
880 : V(CompileBackgroundRewriteReturnResult) \
881 : V(CompileBackgroundScopeAnalysis) \
882 : V(CompileBackgroundScript) \
883 : V(CompileCollectSourcePositions) \
884 : V(CompileDeserialize) \
885 : V(CompileEnqueueOnDispatcher) \
886 : V(CompileEval) \
887 : V(CompileFinalizeBackgroundCompileTask) \
888 : V(CompileFinishNowOnDispatcher) \
889 : V(CompileFunction) \
890 : V(CompileGetFromOptimizedCodeMap) \
891 : V(CompileIgnition) \
892 : V(CompileIgnitionFinalization) \
893 : V(CompileRewriteReturnResult) \
894 : V(CompileScopeAnalysis) \
895 : V(CompileScript) \
896 : V(CompileSerialize) \
897 : V(CompileWaitForDispatcher) \
898 : V(DeoptimizeCode) \
899 : V(DeserializeContext) \
900 : V(DeserializeIsolate) \
901 : V(FunctionCallback) \
902 : V(FunctionLengthGetter) \
903 : V(FunctionPrototypeGetter) \
904 : V(FunctionPrototypeSetter) \
905 : V(GC_Custom_AllAvailableGarbage) \
906 : V(GC_Custom_IncrementalMarkingObserver) \
907 : V(GC_Custom_SlowAllocateRaw) \
908 : V(GCEpilogueCallback) \
909 : V(GCPrologueCallback) \
910 : V(Genesis) \
911 : V(GetMoreDataCallback) \
912 : V(IndexedDefinerCallback) \
913 : V(IndexedDeleterCallback) \
914 : V(IndexedDescriptorCallback) \
915 : V(IndexedEnumeratorCallback) \
916 : V(IndexedGetterCallback) \
917 : V(IndexedQueryCallback) \
918 : V(IndexedSetterCallback) \
919 : V(Invoke) \
920 : V(InvokeApiFunction) \
921 : V(InvokeApiInterruptCallbacks) \
922 : V(InvokeFunctionCallback) \
923 : V(JS_Execution) \
924 : V(Map_SetPrototype) \
925 : V(Map_TransitionToAccessorProperty) \
926 : V(Map_TransitionToDataProperty) \
927 : V(MessageListenerCallback) \
928 : V(NamedDefinerCallback) \
929 : V(NamedDeleterCallback) \
930 : V(NamedDescriptorCallback) \
931 : V(NamedEnumeratorCallback) \
932 : V(NamedGetterCallback) \
933 : V(NamedQueryCallback) \
934 : V(NamedSetterCallback) \
935 : V(Object_DeleteProperty) \
936 : V(ObjectVerify) \
937 : V(OptimizeCode) \
938 : V(ParseArrowFunctionLiteral) \
939 : V(ParseBackgroundArrowFunctionLiteral) \
940 : V(ParseBackgroundFunctionLiteral) \
941 : V(ParseBackgroundProgram) \
942 : V(ParseEval) \
943 : V(ParseFunction) \
944 : V(ParseFunctionLiteral) \
945 : V(ParseProgram) \
946 : V(PreParseArrowFunctionLiteral) \
947 : V(PreParseBackgroundArrowFunctionLiteral) \
948 : V(PreParseBackgroundWithVariableResolution) \
949 : V(PreParseWithVariableResolution) \
950 : V(PropertyCallback) \
951 : V(PrototypeMap_TransitionToAccessorProperty) \
952 : V(PrototypeMap_TransitionToDataProperty) \
953 : V(PrototypeObject_DeleteProperty) \
954 : V(RecompileConcurrent) \
955 : V(RecompileSynchronous) \
956 : V(ReconfigureToDataProperty) \
957 : V(StringLengthGetter) \
958 : V(TestCounter1) \
959 : V(TestCounter2) \
960 : V(TestCounter3)
961 :
962 : #define FOR_EACH_HANDLER_COUNTER(V) \
963 : V(KeyedLoadIC_KeyedLoadSloppyArgumentsStub) \
964 : V(KeyedLoadIC_LoadElementDH) \
965 : V(KeyedLoadIC_LoadIndexedInterceptorStub) \
966 : V(KeyedLoadIC_LoadIndexedStringDH) \
967 : V(KeyedLoadIC_SlowStub) \
968 : V(KeyedStoreIC_ElementsTransitionAndStoreStub) \
969 : V(KeyedStoreIC_KeyedStoreSloppyArgumentsStub) \
970 : V(KeyedStoreIC_SlowStub) \
971 : V(KeyedStoreIC_StoreElementStub) \
972 : V(KeyedStoreIC_StoreFastElementStub) \
973 : V(LoadGlobalIC_LoadScriptContextField) \
974 : V(LoadGlobalIC_SlowStub) \
975 : V(LoadIC_FunctionPrototypeStub) \
976 : V(LoadIC_HandlerCacheHit_Accessor) \
977 : V(LoadIC_LoadAccessorDH) \
978 : V(LoadIC_LoadAccessorFromPrototypeDH) \
979 : V(LoadIC_LoadApiGetterFromPrototypeDH) \
980 : V(LoadIC_LoadCallback) \
981 : V(LoadIC_LoadConstantDH) \
982 : V(LoadIC_LoadConstantFromPrototypeDH) \
983 : V(LoadIC_LoadFieldDH) \
984 : V(LoadIC_LoadFieldFromPrototypeDH) \
985 : V(LoadIC_LoadGlobalDH) \
986 : V(LoadIC_LoadGlobalFromPrototypeDH) \
987 : V(LoadIC_LoadIntegerIndexedExoticDH) \
988 : V(LoadIC_LoadInterceptorDH) \
989 : V(LoadIC_LoadInterceptorFromPrototypeDH) \
990 : V(LoadIC_LoadNativeDataPropertyDH) \
991 : V(LoadIC_LoadNativeDataPropertyFromPrototypeDH) \
992 : V(LoadIC_LoadNonexistentDH) \
993 : V(LoadIC_LoadNonMaskingInterceptorDH) \
994 : V(LoadIC_LoadNormalDH) \
995 : V(LoadIC_LoadNormalFromPrototypeDH) \
996 : V(LoadIC_NonReceiver) \
997 : V(LoadIC_Premonomorphic) \
998 : V(LoadIC_SlowStub) \
999 : V(LoadIC_StringLength) \
1000 : V(LoadIC_StringWrapperLength) \
1001 : V(StoreGlobalIC_SlowStub) \
1002 : V(StoreGlobalIC_StoreScriptContextField) \
1003 : V(StoreGlobalIC_Premonomorphic) \
1004 : V(StoreIC_HandlerCacheHit_Accessor) \
1005 : V(StoreIC_NonReceiver) \
1006 : V(StoreIC_Premonomorphic) \
1007 : V(StoreIC_SlowStub) \
1008 : V(StoreIC_StoreAccessorDH) \
1009 : V(StoreIC_StoreAccessorOnPrototypeDH) \
1010 : V(StoreIC_StoreApiSetterOnPrototypeDH) \
1011 : V(StoreIC_StoreFieldDH) \
1012 : V(StoreIC_StoreGlobalDH) \
1013 : V(StoreIC_StoreGlobalTransitionDH) \
1014 : V(StoreIC_StoreInterceptorStub) \
1015 : V(StoreIC_StoreNativeDataPropertyDH) \
1016 : V(StoreIC_StoreNativeDataPropertyOnPrototypeDH) \
1017 : V(StoreIC_StoreNormalDH) \
1018 : V(StoreIC_StoreTransitionDH) \
1019 : V(StoreInArrayLiteralIC_SlowStub)
1020 :
1021 : enum RuntimeCallCounterId {
1022 : #define CALL_RUNTIME_COUNTER(name) kGC_##name,
1023 : FOR_EACH_GC_COUNTER(CALL_RUNTIME_COUNTER)
1024 : #undef CALL_RUNTIME_COUNTER
1025 : #define CALL_RUNTIME_COUNTER(name) k##name,
1026 : FOR_EACH_MANUAL_COUNTER(CALL_RUNTIME_COUNTER)
1027 : #undef CALL_RUNTIME_COUNTER
1028 : #define CALL_RUNTIME_COUNTER(name, nargs, ressize) kRuntime_##name,
1029 : FOR_EACH_INTRINSIC(CALL_RUNTIME_COUNTER)
1030 : #undef CALL_RUNTIME_COUNTER
1031 : #define CALL_BUILTIN_COUNTER(name) kBuiltin_##name,
1032 : BUILTIN_LIST_C(CALL_BUILTIN_COUNTER)
1033 : #undef CALL_BUILTIN_COUNTER
1034 : #define CALL_BUILTIN_COUNTER(name) kAPI_##name,
1035 : FOR_EACH_API_COUNTER(CALL_BUILTIN_COUNTER)
1036 : #undef CALL_BUILTIN_COUNTER
1037 : #define CALL_BUILTIN_COUNTER(name) kHandler_##name,
1038 : FOR_EACH_HANDLER_COUNTER(CALL_BUILTIN_COUNTER)
1039 : #undef CALL_BUILTIN_COUNTER
1040 : kNumberOfCounters
1041 : };
1042 :
1043 : class RuntimeCallStats final {
1044 : public:
1045 : V8_EXPORT_PRIVATE RuntimeCallStats();
1046 :
1047 : // Starting measuring the time for a function. This will establish the
1048 : // connection to the parent counter for properly calculating the own times.
1049 : V8_EXPORT_PRIVATE void Enter(RuntimeCallTimer* timer,
1050 : RuntimeCallCounterId counter_id);
1051 :
1052 : // Leave a scope for a measured runtime function. This will properly add
1053 : // the time delta to the current_counter and subtract the delta from its
1054 : // parent.
1055 : V8_EXPORT_PRIVATE void Leave(RuntimeCallTimer* timer);
1056 :
1057 : // Set counter id for the innermost measurement. It can be used to refine
1058 : // event kind when a runtime entry counter is too generic.
1059 : V8_EXPORT_PRIVATE void CorrectCurrentCounterId(
1060 : RuntimeCallCounterId counter_id);
1061 :
1062 : V8_EXPORT_PRIVATE void Reset();
1063 : // Add all entries from another stats object.
1064 : void Add(RuntimeCallStats* other);
1065 : V8_EXPORT_PRIVATE void Print(std::ostream& os);
1066 : V8_EXPORT_PRIVATE void Print();
1067 : V8_NOINLINE void Dump(v8::tracing::TracedValue* value);
1068 :
1069 : ThreadId thread_id() const { return thread_id_; }
1070 : RuntimeCallTimer* current_timer() { return current_timer_.Value(); }
1071 : RuntimeCallCounter* current_counter() { return current_counter_.Value(); }
1072 : bool InUse() { return in_use_; }
1073 : bool IsCalledOnTheSameThread();
1074 :
1075 : static const int kNumberOfCounters =
1076 : static_cast<int>(RuntimeCallCounterId::kNumberOfCounters);
1077 : RuntimeCallCounter* GetCounter(RuntimeCallCounterId counter_id) {
1078 27450 : return &counters_[static_cast<int>(counter_id)];
1079 : }
1080 : RuntimeCallCounter* GetCounter(int counter_id) {
1081 : return &counters_[counter_id];
1082 : }
1083 :
1084 : private:
1085 : // Top of a stack of active timers.
1086 : base::AtomicValue<RuntimeCallTimer*> current_timer_;
1087 : // Active counter object associated with current timer.
1088 : base::AtomicValue<RuntimeCallCounter*> current_counter_;
1089 : // Used to track nested tracing scopes.
1090 : bool in_use_;
1091 : ThreadId thread_id_;
1092 : RuntimeCallCounter counters_[kNumberOfCounters];
1093 : };
1094 :
1095 : class WorkerThreadRuntimeCallStats final {
1096 : public:
1097 : WorkerThreadRuntimeCallStats();
1098 : ~WorkerThreadRuntimeCallStats();
1099 :
1100 : // Returns the TLS key associated with this WorkerThreadRuntimeCallStats.
1101 : base::Thread::LocalStorageKey GetKey();
1102 :
1103 : // Returns a new worker thread runtime call stats table managed by this
1104 : // WorkerThreadRuntimeCallStats.
1105 : RuntimeCallStats* NewTable();
1106 :
1107 : // Adds the counters from the worker thread tables to |main_call_stats|.
1108 : void AddToMainTable(RuntimeCallStats* main_call_stats);
1109 :
1110 : private:
1111 : base::Mutex mutex_;
1112 : std::vector<std::unique_ptr<RuntimeCallStats>> tables_;
1113 : base::Optional<base::Thread::LocalStorageKey> tls_key_;
1114 : };
1115 :
1116 : // Creating a WorkerThreadRuntimeCallStatsScope will provide a thread-local
1117 : // runtime call stats table, and will dump the table to an immediate trace event
1118 : // when it is destroyed.
1119 : class WorkerThreadRuntimeCallStatsScope final {
1120 : public:
1121 : WorkerThreadRuntimeCallStatsScope(
1122 : WorkerThreadRuntimeCallStats* off_thread_stats);
1123 : ~WorkerThreadRuntimeCallStatsScope();
1124 :
1125 20348 : RuntimeCallStats* Get() const { return table_; }
1126 :
1127 : private:
1128 : RuntimeCallStats* table_;
1129 : };
1130 :
1131 : #define CHANGE_CURRENT_RUNTIME_COUNTER(runtime_call_stats, counter_id) \
1132 : do { \
1133 : if (V8_UNLIKELY(FLAG_runtime_stats) && runtime_call_stats) { \
1134 : runtime_call_stats->CorrectCurrentCounterId(counter_id); \
1135 : } \
1136 : } while (false)
1137 :
1138 : #define TRACE_HANDLER_STATS(isolate, counter_name) \
1139 : CHANGE_CURRENT_RUNTIME_COUNTER( \
1140 : isolate->counters()->runtime_call_stats(), \
1141 : RuntimeCallCounterId::kHandler_##counter_name)
1142 :
1143 : // A RuntimeCallTimerScopes wraps around a RuntimeCallTimer to measure the
1144 : // the time of C++ scope.
1145 : class RuntimeCallTimerScope {
1146 : public:
1147 : inline RuntimeCallTimerScope(Isolate* isolate,
1148 : RuntimeCallCounterId counter_id);
1149 : // This constructor is here just to avoid calling GetIsolate() when the
1150 : // stats are disabled and the isolate is not directly available.
1151 : inline RuntimeCallTimerScope(Isolate* isolate, HeapObject heap_object,
1152 : RuntimeCallCounterId counter_id);
1153 17110123 : inline RuntimeCallTimerScope(RuntimeCallStats* stats,
1154 17110123 : RuntimeCallCounterId counter_id) {
1155 34220246 : if (V8_LIKELY(!FLAG_runtime_stats || stats == nullptr)) return;
1156 8124 : stats_ = stats;
1157 8124 : stats_->Enter(&timer_, counter_id);
1158 : }
1159 :
1160 : inline ~RuntimeCallTimerScope() {
1161 172076179 : if (V8_UNLIKELY(stats_ != nullptr)) {
1162 27432 : stats_->Leave(&timer_);
1163 : }
1164 : }
1165 :
1166 : private:
1167 : RuntimeCallStats* stats_ = nullptr;
1168 : RuntimeCallTimer timer_;
1169 :
1170 : DISALLOW_COPY_AND_ASSIGN(RuntimeCallTimerScope);
1171 : };
1172 :
1173 : #define HISTOGRAM_RANGE_LIST(HR) \
1174 : /* Generic range histograms: HR(name, caption, min, max, num_buckets) */ \
1175 : HR(background_marking, V8.GCBackgroundMarking, 0, 10000, 101) \
1176 : HR(background_scavenger, V8.GCBackgroundScavenger, 0, 10000, 101) \
1177 : HR(background_sweeping, V8.GCBackgroundSweeping, 0, 10000, 101) \
1178 : HR(detached_context_age_in_gc, V8.DetachedContextAgeInGC, 0, 20, 21) \
1179 : HR(code_cache_reject_reason, V8.CodeCacheRejectReason, 1, 6, 6) \
1180 : HR(errors_thrown_per_context, V8.ErrorsThrownPerContext, 0, 200, 20) \
1181 : HR(debug_feature_usage, V8.DebugFeatureUsage, 1, 7, 7) \
1182 : HR(incremental_marking_reason, V8.GCIncrementalMarkingReason, 0, 21, 22) \
1183 : HR(incremental_marking_sum, V8.GCIncrementalMarkingSum, 0, 10000, 101) \
1184 : HR(mark_compact_reason, V8.GCMarkCompactReason, 0, 21, 22) \
1185 : HR(gc_finalize_clear, V8.GCFinalizeMC.Clear, 0, 10000, 101) \
1186 : HR(gc_finalize_epilogue, V8.GCFinalizeMC.Epilogue, 0, 10000, 101) \
1187 : HR(gc_finalize_evacuate, V8.GCFinalizeMC.Evacuate, 0, 10000, 101) \
1188 : HR(gc_finalize_finish, V8.GCFinalizeMC.Finish, 0, 10000, 101) \
1189 : HR(gc_finalize_mark, V8.GCFinalizeMC.Mark, 0, 10000, 101) \
1190 : HR(gc_finalize_prologue, V8.GCFinalizeMC.Prologue, 0, 10000, 101) \
1191 : HR(gc_finalize_sweep, V8.GCFinalizeMC.Sweep, 0, 10000, 101) \
1192 : HR(gc_scavenger_scavenge_main, V8.GCScavenger.ScavengeMain, 0, 10000, 101) \
1193 : HR(gc_scavenger_scavenge_roots, V8.GCScavenger.ScavengeRoots, 0, 10000, 101) \
1194 : HR(gc_mark_compactor, V8.GCMarkCompactor, 0, 10000, 101) \
1195 : HR(scavenge_reason, V8.GCScavengeReason, 0, 21, 22) \
1196 : HR(young_generation_handling, V8.GCYoungGenerationHandling, 0, 2, 3) \
1197 : /* Asm/Wasm. */ \
1198 : HR(wasm_functions_per_asm_module, V8.WasmFunctionsPerModule.asm, 1, 100000, \
1199 : 51) \
1200 : HR(wasm_functions_per_wasm_module, V8.WasmFunctionsPerModule.wasm, 1, \
1201 : 100000, 51) \
1202 : HR(array_buffer_big_allocations, V8.ArrayBufferLargeAllocations, 0, 4096, \
1203 : 13) \
1204 : HR(array_buffer_new_size_failures, V8.ArrayBufferNewSizeFailures, 0, 4096, \
1205 : 13) \
1206 : HR(shared_array_allocations, V8.SharedArrayAllocationSizes, 0, 4096, 13) \
1207 : HR(wasm_asm_function_size_bytes, V8.WasmFunctionSizeBytes.asm, 1, GB, 51) \
1208 : HR(wasm_wasm_function_size_bytes, V8.WasmFunctionSizeBytes.wasm, 1, GB, 51) \
1209 : HR(wasm_asm_module_size_bytes, V8.WasmModuleSizeBytes.asm, 1, GB, 51) \
1210 : HR(wasm_wasm_module_size_bytes, V8.WasmModuleSizeBytes.wasm, 1, GB, 51) \
1211 : HR(wasm_asm_min_mem_pages_count, V8.WasmMinMemPagesCount.asm, 1, 2 << 16, \
1212 : 51) \
1213 : HR(wasm_wasm_min_mem_pages_count, V8.WasmMinMemPagesCount.wasm, 1, 2 << 16, \
1214 : 51) \
1215 : HR(wasm_wasm_max_mem_pages_count, V8.WasmMaxMemPagesCount.wasm, 1, 2 << 16, \
1216 : 51) \
1217 : HR(wasm_decode_asm_module_peak_memory_bytes, \
1218 : V8.WasmDecodeModulePeakMemoryBytes.asm, 1, GB, 51) \
1219 : HR(wasm_decode_wasm_module_peak_memory_bytes, \
1220 : V8.WasmDecodeModulePeakMemoryBytes.wasm, 1, GB, 51) \
1221 : HR(asm_wasm_translation_peak_memory_bytes, \
1222 : V8.AsmWasmTranslationPeakMemoryBytes, 1, GB, 51) \
1223 : HR(wasm_compile_function_peak_memory_bytes, \
1224 : V8.WasmCompileFunctionPeakMemoryBytes, 1, GB, 51) \
1225 : HR(asm_module_size_bytes, V8.AsmModuleSizeBytes, 1, GB, 51) \
1226 : HR(asm_wasm_translation_throughput, V8.AsmWasmTranslationThroughput, 1, 100, \
1227 : 20) \
1228 : HR(wasm_lazy_compilation_throughput, V8.WasmLazyCompilationThroughput, 1, \
1229 : 10000, 50) \
1230 : HR(compile_script_cache_behaviour, V8.CompileScript.CacheBehaviour, 0, 20, \
1231 : 21) \
1232 : HR(wasm_memory_allocation_result, V8.WasmMemoryAllocationResult, 0, 3, 4) \
1233 : HR(wasm_address_space_usage_mb, V8.WasmAddressSpaceUsageMiB, 0, 1 << 20, \
1234 : 128) \
1235 : HR(wasm_module_code_size_mb, V8.WasmModuleCodeSizeMiB, 0, 1024, 64)
1236 :
1237 : #define HISTOGRAM_TIMER_LIST(HT) \
1238 : /* Garbage collection timers. */ \
1239 : HT(gc_context, V8.GCContext, 10000, \
1240 : MILLISECOND) /* GC context cleanup time */ \
1241 : HT(gc_idle_notification, V8.GCIdleNotification, 10000, MILLISECOND) \
1242 : HT(gc_incremental_marking, V8.GCIncrementalMarking, 10000, MILLISECOND) \
1243 : HT(gc_incremental_marking_start, V8.GCIncrementalMarkingStart, 10000, \
1244 : MILLISECOND) \
1245 : HT(gc_incremental_marking_finalize, V8.GCIncrementalMarkingFinalize, 10000, \
1246 : MILLISECOND) \
1247 : HT(gc_low_memory_notification, V8.GCLowMemoryNotification, 10000, \
1248 : MILLISECOND) \
1249 : /* Compilation times. */ \
1250 : HT(collect_source_positions, V8.CollectSourcePositions, 1000000, \
1251 : MICROSECOND) \
1252 : HT(compile, V8.CompileMicroSeconds, 1000000, MICROSECOND) \
1253 : HT(compile_eval, V8.CompileEvalMicroSeconds, 1000000, MICROSECOND) \
1254 : /* Serialization as part of compilation (code caching) */ \
1255 : HT(compile_serialize, V8.CompileSerializeMicroSeconds, 100000, MICROSECOND) \
1256 : HT(compile_deserialize, V8.CompileDeserializeMicroSeconds, 1000000, \
1257 : MICROSECOND) \
1258 : /* Total compilation time incl. caching/parsing */ \
1259 : HT(compile_script, V8.CompileScriptMicroSeconds, 1000000, MICROSECOND) \
1260 : /* Total JavaScript execution time (including callbacks and runtime calls */ \
1261 : HT(execute, V8.Execute, 1000000, MICROSECOND) \
1262 : /* Asm/Wasm */ \
1263 : HT(asm_wasm_translation_time, V8.AsmWasmTranslationMicroSeconds, 1000000, \
1264 : MICROSECOND) \
1265 : HT(wasm_lazy_compilation_time, V8.WasmLazyCompilationMicroSeconds, 1000000, \
1266 : MICROSECOND) \
1267 : HT(wasm_execution_time, V8.WasmExecutionTimeMicroSeconds, 10000000, \
1268 : MICROSECOND)
1269 :
1270 : #define TIMED_HISTOGRAM_LIST(HT) \
1271 : /* Garbage collection timers. */ \
1272 : HT(gc_compactor, V8.GCCompactor, 10000, MILLISECOND) \
1273 : HT(gc_compactor_background, V8.GCCompactorBackground, 10000, MILLISECOND) \
1274 : HT(gc_compactor_foreground, V8.GCCompactorForeground, 10000, MILLISECOND) \
1275 : HT(gc_finalize, V8.GCFinalizeMC, 10000, MILLISECOND) \
1276 : HT(gc_finalize_background, V8.GCFinalizeMCBackground, 10000, MILLISECOND) \
1277 : HT(gc_finalize_foreground, V8.GCFinalizeMCForeground, 10000, MILLISECOND) \
1278 : HT(gc_finalize_reduce_memory, V8.GCFinalizeMCReduceMemory, 10000, \
1279 : MILLISECOND) \
1280 : HT(gc_finalize_reduce_memory_background, \
1281 : V8.GCFinalizeMCReduceMemoryBackground, 10000, MILLISECOND) \
1282 : HT(gc_finalize_reduce_memory_foreground, \
1283 : V8.GCFinalizeMCReduceMemoryForeground, 10000, MILLISECOND) \
1284 : HT(gc_scavenger, V8.GCScavenger, 10000, MILLISECOND) \
1285 : HT(gc_scavenger_background, V8.GCScavengerBackground, 10000, MILLISECOND) \
1286 : HT(gc_scavenger_foreground, V8.GCScavengerForeground, 10000, MILLISECOND) \
1287 : /* Wasm timers. */ \
1288 : HT(wasm_decode_asm_module_time, V8.WasmDecodeModuleMicroSeconds.asm, \
1289 : 1000000, MICROSECOND) \
1290 : HT(wasm_decode_wasm_module_time, V8.WasmDecodeModuleMicroSeconds.wasm, \
1291 : 1000000, MICROSECOND) \
1292 : HT(wasm_decode_asm_function_time, V8.WasmDecodeFunctionMicroSeconds.asm, \
1293 : 1000000, MICROSECOND) \
1294 : HT(wasm_decode_wasm_function_time, V8.WasmDecodeFunctionMicroSeconds.wasm, \
1295 : 1000000, MICROSECOND) \
1296 : HT(wasm_compile_asm_module_time, V8.WasmCompileModuleMicroSeconds.asm, \
1297 : 10000000, MICROSECOND) \
1298 : HT(wasm_compile_wasm_module_time, V8.WasmCompileModuleMicroSeconds.wasm, \
1299 : 10000000, MICROSECOND) \
1300 : HT(wasm_compile_asm_function_time, V8.WasmCompileFunctionMicroSeconds.asm, \
1301 : 1000000, MICROSECOND) \
1302 : HT(wasm_compile_wasm_function_time, V8.WasmCompileFunctionMicroSeconds.wasm, \
1303 : 1000000, MICROSECOND) \
1304 : HT(liftoff_compile_time, V8.LiftoffCompileMicroSeconds, 10000000, \
1305 : MICROSECOND) \
1306 : HT(wasm_instantiate_wasm_module_time, \
1307 : V8.WasmInstantiateModuleMicroSeconds.wasm, 10000000, MICROSECOND) \
1308 : HT(wasm_instantiate_asm_module_time, \
1309 : V8.WasmInstantiateModuleMicroSeconds.asm, 10000000, MICROSECOND) \
1310 : /* Total compilation time incl. caching/parsing for various cache states. */ \
1311 : HT(compile_script_with_produce_cache, \
1312 : V8.CompileScriptMicroSeconds.ProduceCache, 1000000, MICROSECOND) \
1313 : HT(compile_script_with_isolate_cache_hit, \
1314 : V8.CompileScriptMicroSeconds.IsolateCacheHit, 1000000, MICROSECOND) \
1315 : HT(compile_script_with_consume_cache, \
1316 : V8.CompileScriptMicroSeconds.ConsumeCache, 1000000, MICROSECOND) \
1317 : HT(compile_script_consume_failed, \
1318 : V8.CompileScriptMicroSeconds.ConsumeCache.Failed, 1000000, MICROSECOND) \
1319 : HT(compile_script_no_cache_other, \
1320 : V8.CompileScriptMicroSeconds.NoCache.Other, 1000000, MICROSECOND) \
1321 : HT(compile_script_no_cache_because_inline_script, \
1322 : V8.CompileScriptMicroSeconds.NoCache.InlineScript, 1000000, MICROSECOND) \
1323 : HT(compile_script_no_cache_because_script_too_small, \
1324 : V8.CompileScriptMicroSeconds.NoCache.ScriptTooSmall, 1000000, \
1325 : MICROSECOND) \
1326 : HT(compile_script_no_cache_because_cache_too_cold, \
1327 : V8.CompileScriptMicroSeconds.NoCache.CacheTooCold, 1000000, MICROSECOND) \
1328 : HT(compile_script_on_background, \
1329 : V8.CompileScriptMicroSeconds.BackgroundThread, 1000000, MICROSECOND) \
1330 : HT(compile_function_on_background, \
1331 : V8.CompileFunctionMicroSeconds.BackgroundThread, 1000000, MICROSECOND)
1332 :
1333 : #define AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT) \
1334 : AHT(compile_lazy, V8.CompileLazyMicroSeconds)
1335 :
1336 : #define HISTOGRAM_PERCENTAGE_LIST(HP) \
1337 : /* Heap fragmentation. */ \
1338 : HP(external_fragmentation_total, V8.MemoryExternalFragmentationTotal) \
1339 : HP(external_fragmentation_old_space, V8.MemoryExternalFragmentationOldSpace) \
1340 : HP(external_fragmentation_code_space, \
1341 : V8.MemoryExternalFragmentationCodeSpace) \
1342 : HP(external_fragmentation_map_space, V8.MemoryExternalFragmentationMapSpace) \
1343 : HP(external_fragmentation_lo_space, V8.MemoryExternalFragmentationLoSpace)
1344 :
1345 : // Note: These use Histogram with options (min=1000, max=500000, buckets=50).
1346 : #define HISTOGRAM_LEGACY_MEMORY_LIST(HM) \
1347 : HM(heap_sample_total_committed, V8.MemoryHeapSampleTotalCommitted) \
1348 : HM(heap_sample_total_used, V8.MemoryHeapSampleTotalUsed) \
1349 : HM(heap_sample_map_space_committed, V8.MemoryHeapSampleMapSpaceCommitted) \
1350 : HM(heap_sample_code_space_committed, V8.MemoryHeapSampleCodeSpaceCommitted) \
1351 : HM(heap_sample_maximum_committed, V8.MemoryHeapSampleMaximumCommitted)
1352 :
1353 : // WARNING: STATS_COUNTER_LIST_* is a very large macro that is causing MSVC
1354 : // Intellisense to crash. It was broken into two macros (each of length 40
1355 : // lines) rather than one macro (of length about 80 lines) to work around
1356 : // this problem. Please avoid using recursive macros of this length when
1357 : // possible.
1358 : #define STATS_COUNTER_LIST_1(SC) \
1359 : /* Global Handle Count*/ \
1360 : SC(global_handles, V8.GlobalHandles) \
1361 : /* OS Memory allocated */ \
1362 : SC(memory_allocated, V8.OsMemoryAllocated) \
1363 : SC(maps_normalized, V8.MapsNormalized) \
1364 : SC(maps_created, V8.MapsCreated) \
1365 : SC(elements_transitions, V8.ObjectElementsTransitions) \
1366 : SC(props_to_dictionary, V8.ObjectPropertiesToDictionary) \
1367 : SC(elements_to_dictionary, V8.ObjectElementsToDictionary) \
1368 : SC(alive_after_last_gc, V8.AliveAfterLastGC) \
1369 : SC(objs_since_last_young, V8.ObjsSinceLastYoung) \
1370 : SC(objs_since_last_full, V8.ObjsSinceLastFull) \
1371 : SC(string_table_capacity, V8.StringTableCapacity) \
1372 : SC(number_of_symbols, V8.NumberOfSymbols) \
1373 : SC(inlined_copied_elements, V8.InlinedCopiedElements) \
1374 : SC(compilation_cache_hits, V8.CompilationCacheHits) \
1375 : SC(compilation_cache_misses, V8.CompilationCacheMisses) \
1376 : /* Amount of evaled source code. */ \
1377 : SC(total_eval_size, V8.TotalEvalSize) \
1378 : /* Amount of loaded source code. */ \
1379 : SC(total_load_size, V8.TotalLoadSize) \
1380 : /* Amount of parsed source code. */ \
1381 : SC(total_parse_size, V8.TotalParseSize) \
1382 : /* Amount of source code skipped over using preparsing. */ \
1383 : SC(total_preparse_skipped, V8.TotalPreparseSkipped) \
1384 : /* Amount of compiled source code. */ \
1385 : SC(total_compile_size, V8.TotalCompileSize) \
1386 : /* Amount of source code compiled with the full codegen. */ \
1387 : SC(total_full_codegen_source_size, V8.TotalFullCodegenSourceSize) \
1388 : /* Number of contexts created from scratch. */ \
1389 : SC(contexts_created_from_scratch, V8.ContextsCreatedFromScratch) \
1390 : /* Number of contexts created by partial snapshot. */ \
1391 : SC(contexts_created_by_snapshot, V8.ContextsCreatedBySnapshot) \
1392 : /* Number of code objects found from pc. */ \
1393 : SC(pc_to_code, V8.PcToCode) \
1394 : SC(pc_to_code_cached, V8.PcToCodeCached) \
1395 : /* The store-buffer implementation of the write barrier. */ \
1396 : SC(store_buffer_overflows, V8.StoreBufferOverflows)
1397 :
1398 : #define STATS_COUNTER_LIST_2(SC) \
1399 : /* Amount of (JS) compiled code. */ \
1400 : SC(total_compiled_code_size, V8.TotalCompiledCodeSize) \
1401 : SC(gc_compactor_caused_by_request, V8.GCCompactorCausedByRequest) \
1402 : SC(gc_compactor_caused_by_promoted_data, V8.GCCompactorCausedByPromotedData) \
1403 : SC(gc_compactor_caused_by_oldspace_exhaustion, \
1404 : V8.GCCompactorCausedByOldspaceExhaustion) \
1405 : SC(gc_last_resort_from_js, V8.GCLastResortFromJS) \
1406 : SC(gc_last_resort_from_handles, V8.GCLastResortFromHandles) \
1407 : SC(ic_keyed_load_generic_smi, V8.ICKeyedLoadGenericSmi) \
1408 : SC(ic_keyed_load_generic_symbol, V8.ICKeyedLoadGenericSymbol) \
1409 : SC(ic_keyed_load_generic_slow, V8.ICKeyedLoadGenericSlow) \
1410 : SC(ic_named_load_global_stub, V8.ICNamedLoadGlobalStub) \
1411 : SC(ic_store_normal_miss, V8.ICStoreNormalMiss) \
1412 : SC(ic_store_normal_hit, V8.ICStoreNormalHit) \
1413 : SC(ic_binary_op_miss, V8.ICBinaryOpMiss) \
1414 : SC(ic_compare_miss, V8.ICCompareMiss) \
1415 : SC(ic_call_miss, V8.ICCallMiss) \
1416 : SC(ic_keyed_call_miss, V8.ICKeyedCallMiss) \
1417 : SC(ic_store_miss, V8.ICStoreMiss) \
1418 : SC(ic_keyed_store_miss, V8.ICKeyedStoreMiss) \
1419 : SC(cow_arrays_converted, V8.COWArraysConverted) \
1420 : SC(constructed_objects, V8.ConstructedObjects) \
1421 : SC(constructed_objects_runtime, V8.ConstructedObjectsRuntime) \
1422 : SC(megamorphic_stub_cache_probes, V8.MegamorphicStubCacheProbes) \
1423 : SC(megamorphic_stub_cache_misses, V8.MegamorphicStubCacheMisses) \
1424 : SC(megamorphic_stub_cache_updates, V8.MegamorphicStubCacheUpdates) \
1425 : SC(enum_cache_hits, V8.EnumCacheHits) \
1426 : SC(enum_cache_misses, V8.EnumCacheMisses) \
1427 : SC(fast_new_closure_total, V8.FastNewClosureTotal) \
1428 : SC(string_add_runtime, V8.StringAddRuntime) \
1429 : SC(string_add_native, V8.StringAddNative) \
1430 : SC(string_add_runtime_ext_to_one_byte, V8.StringAddRuntimeExtToOneByte) \
1431 : SC(sub_string_runtime, V8.SubStringRuntime) \
1432 : SC(sub_string_native, V8.SubStringNative) \
1433 : SC(regexp_entry_runtime, V8.RegExpEntryRuntime) \
1434 : SC(regexp_entry_native, V8.RegExpEntryNative) \
1435 : SC(math_exp_runtime, V8.MathExpRuntime) \
1436 : SC(math_log_runtime, V8.MathLogRuntime) \
1437 : SC(math_pow_runtime, V8.MathPowRuntime) \
1438 : SC(stack_interrupts, V8.StackInterrupts) \
1439 : SC(runtime_profiler_ticks, V8.RuntimeProfilerTicks) \
1440 : SC(runtime_calls, V8.RuntimeCalls) \
1441 : SC(bounds_checks_eliminated, V8.BoundsChecksEliminated) \
1442 : SC(bounds_checks_hoisted, V8.BoundsChecksHoisted) \
1443 : SC(soft_deopts_requested, V8.SoftDeoptsRequested) \
1444 : SC(soft_deopts_inserted, V8.SoftDeoptsInserted) \
1445 : SC(soft_deopts_executed, V8.SoftDeoptsExecuted) \
1446 : /* Number of write barriers in generated code. */ \
1447 : SC(write_barriers_dynamic, V8.WriteBarriersDynamic) \
1448 : SC(write_barriers_static, V8.WriteBarriersStatic) \
1449 : SC(new_space_bytes_available, V8.MemoryNewSpaceBytesAvailable) \
1450 : SC(new_space_bytes_committed, V8.MemoryNewSpaceBytesCommitted) \
1451 : SC(new_space_bytes_used, V8.MemoryNewSpaceBytesUsed) \
1452 : SC(old_space_bytes_available, V8.MemoryOldSpaceBytesAvailable) \
1453 : SC(old_space_bytes_committed, V8.MemoryOldSpaceBytesCommitted) \
1454 : SC(old_space_bytes_used, V8.MemoryOldSpaceBytesUsed) \
1455 : SC(code_space_bytes_available, V8.MemoryCodeSpaceBytesAvailable) \
1456 : SC(code_space_bytes_committed, V8.MemoryCodeSpaceBytesCommitted) \
1457 : SC(code_space_bytes_used, V8.MemoryCodeSpaceBytesUsed) \
1458 : SC(map_space_bytes_available, V8.MemoryMapSpaceBytesAvailable) \
1459 : SC(map_space_bytes_committed, V8.MemoryMapSpaceBytesCommitted) \
1460 : SC(map_space_bytes_used, V8.MemoryMapSpaceBytesUsed) \
1461 : SC(lo_space_bytes_available, V8.MemoryLoSpaceBytesAvailable) \
1462 : SC(lo_space_bytes_committed, V8.MemoryLoSpaceBytesCommitted) \
1463 : SC(lo_space_bytes_used, V8.MemoryLoSpaceBytesUsed) \
1464 : /* Total code size (including metadata) of baseline code or bytecode. */ \
1465 : SC(total_baseline_code_size, V8.TotalBaselineCodeSize) \
1466 : /* Total count of functions compiled using the baseline compiler. */ \
1467 : SC(total_baseline_compile_count, V8.TotalBaselineCompileCount)
1468 :
1469 : #define STATS_COUNTER_TS_LIST(SC) \
1470 : SC(wasm_generated_code_size, V8.WasmGeneratedCodeBytes) \
1471 : SC(wasm_reloc_size, V8.WasmRelocBytes) \
1472 : SC(wasm_lazily_compiled_functions, V8.WasmLazilyCompiledFunctions) \
1473 : SC(liftoff_compiled_functions, V8.LiftoffCompiledFunctions) \
1474 : SC(liftoff_unsupported_functions, V8.LiftoffUnsupportedFunctions)
1475 :
1476 : // This file contains all the v8 counters that are in use.
1477 122068 : class Counters : public std::enable_shared_from_this<Counters> {
1478 : public:
1479 : explicit Counters(Isolate* isolate);
1480 :
1481 : // Register an application-defined function for recording
1482 : // subsequent counter statistics. Note: Must be called on the main
1483 : // thread.
1484 : void ResetCounterFunction(CounterLookupCallback f);
1485 :
1486 : // Register an application-defined function to create histograms for
1487 : // recording subsequent histogram samples. Note: Must be called on
1488 : // the main thread.
1489 : void ResetCreateHistogramFunction(CreateHistogramCallback f);
1490 :
1491 : // Register an application-defined function to add a sample
1492 : // to a histogram. Will be used in all subsequent sample additions.
1493 : // Note: Must be called on the main thread.
1494 : void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
1495 : stats_table_.SetAddHistogramSampleFunction(f);
1496 : }
1497 :
1498 : #define HR(name, caption, min, max, num_buckets) \
1499 : Histogram* name() { return &name##_; }
1500 : HISTOGRAM_RANGE_LIST(HR)
1501 : #undef HR
1502 :
1503 : #define HT(name, caption, max, res) \
1504 : HistogramTimer* name() { return &name##_; }
1505 : HISTOGRAM_TIMER_LIST(HT)
1506 : #undef HT
1507 :
1508 : #define HT(name, caption, max, res) \
1509 : TimedHistogram* name() { return &name##_; }
1510 : TIMED_HISTOGRAM_LIST(HT)
1511 : #undef HT
1512 :
1513 : #define AHT(name, caption) \
1514 : AggregatableHistogramTimer* name() { return &name##_; }
1515 : AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT)
1516 : #undef AHT
1517 :
1518 : #define HP(name, caption) \
1519 : Histogram* name() { return &name##_; }
1520 : HISTOGRAM_PERCENTAGE_LIST(HP)
1521 : #undef HP
1522 :
1523 : #define HM(name, caption) \
1524 : Histogram* name() { return &name##_; }
1525 : HISTOGRAM_LEGACY_MEMORY_LIST(HM)
1526 : #undef HM
1527 :
1528 : #define SC(name, caption) \
1529 : StatsCounter* name() { return &name##_; }
1530 12539026 : STATS_COUNTER_LIST_1(SC)
1531 12027565 : STATS_COUNTER_LIST_2(SC)
1532 : #undef SC
1533 :
1534 : #define SC(name, caption) \
1535 : StatsCounterThreadSafe* name() { return &name##_; }
1536 : STATS_COUNTER_TS_LIST(SC)
1537 : #undef SC
1538 :
1539 : // clang-format off
1540 : enum Id {
1541 : #define RATE_ID(name, caption, max, res) k_##name,
1542 : HISTOGRAM_TIMER_LIST(RATE_ID)
1543 : TIMED_HISTOGRAM_LIST(RATE_ID)
1544 : #undef RATE_ID
1545 : #define AGGREGATABLE_ID(name, caption) k_##name,
1546 : AGGREGATABLE_HISTOGRAM_TIMER_LIST(AGGREGATABLE_ID)
1547 : #undef AGGREGATABLE_ID
1548 : #define PERCENTAGE_ID(name, caption) k_##name,
1549 : HISTOGRAM_PERCENTAGE_LIST(PERCENTAGE_ID)
1550 : #undef PERCENTAGE_ID
1551 : #define MEMORY_ID(name, caption) k_##name,
1552 : HISTOGRAM_LEGACY_MEMORY_LIST(MEMORY_ID)
1553 : #undef MEMORY_ID
1554 : #define COUNTER_ID(name, caption) k_##name,
1555 : STATS_COUNTER_LIST_1(COUNTER_ID)
1556 : STATS_COUNTER_LIST_2(COUNTER_ID)
1557 : STATS_COUNTER_TS_LIST(COUNTER_ID)
1558 : #undef COUNTER_ID
1559 : #define COUNTER_ID(name) kCountOf##name, kSizeOf##name,
1560 : INSTANCE_TYPE_LIST(COUNTER_ID)
1561 : #undef COUNTER_ID
1562 : #define COUNTER_ID(name) kCountOfCODE_TYPE_##name, \
1563 : kSizeOfCODE_TYPE_##name,
1564 : CODE_KIND_LIST(COUNTER_ID)
1565 : #undef COUNTER_ID
1566 : #define COUNTER_ID(name) kCountOfFIXED_ARRAY__##name, \
1567 : kSizeOfFIXED_ARRAY__##name,
1568 : FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(COUNTER_ID)
1569 : #undef COUNTER_ID
1570 : stats_counter_count
1571 : };
1572 : // clang-format on
1573 :
1574 0 : RuntimeCallStats* runtime_call_stats() { return &runtime_call_stats_; }
1575 :
1576 0 : WorkerThreadRuntimeCallStats* worker_thread_runtime_call_stats() {
1577 0 : return &worker_thread_runtime_call_stats_;
1578 : }
1579 :
1580 : private:
1581 : friend class StatsTable;
1582 : friend class StatsCounterBase;
1583 : friend class Histogram;
1584 : friend class HistogramTimer;
1585 :
1586 : Isolate* isolate_;
1587 : StatsTable stats_table_;
1588 :
1589 : int* FindLocation(const char* name) {
1590 1143334 : return stats_table_.FindLocation(name);
1591 : }
1592 :
1593 : void* CreateHistogram(const char* name, int min, int max, size_t buckets) {
1594 840 : return stats_table_.CreateHistogram(name, min, max, buckets);
1595 : }
1596 :
1597 : void AddHistogramSample(void* histogram, int sample) {
1598 10 : stats_table_.AddHistogramSample(histogram, sample);
1599 : }
1600 :
1601 : Isolate* isolate() { return isolate_; }
1602 :
1603 : #define HR(name, caption, min, max, num_buckets) Histogram name##_;
1604 : HISTOGRAM_RANGE_LIST(HR)
1605 : #undef HR
1606 :
1607 : #define HT(name, caption, max, res) HistogramTimer name##_;
1608 : HISTOGRAM_TIMER_LIST(HT)
1609 : #undef HT
1610 :
1611 : #define HT(name, caption, max, res) TimedHistogram name##_;
1612 : TIMED_HISTOGRAM_LIST(HT)
1613 : #undef HT
1614 :
1615 : #define AHT(name, caption) \
1616 : AggregatableHistogramTimer name##_;
1617 : AGGREGATABLE_HISTOGRAM_TIMER_LIST(AHT)
1618 : #undef AHT
1619 :
1620 : #define HP(name, caption) \
1621 : Histogram name##_;
1622 : HISTOGRAM_PERCENTAGE_LIST(HP)
1623 : #undef HP
1624 :
1625 : #define HM(name, caption) \
1626 : Histogram name##_;
1627 : HISTOGRAM_LEGACY_MEMORY_LIST(HM)
1628 : #undef HM
1629 :
1630 : #define SC(name, caption) \
1631 : StatsCounter name##_;
1632 : STATS_COUNTER_LIST_1(SC)
1633 : STATS_COUNTER_LIST_2(SC)
1634 : #undef SC
1635 :
1636 : #define SC(name, caption) StatsCounterThreadSafe name##_;
1637 : STATS_COUNTER_TS_LIST(SC)
1638 : #undef SC
1639 :
1640 : #define SC(name) \
1641 : StatsCounter size_of_##name##_; \
1642 : StatsCounter count_of_##name##_;
1643 : INSTANCE_TYPE_LIST(SC)
1644 : #undef SC
1645 :
1646 : #define SC(name) \
1647 : StatsCounter size_of_CODE_TYPE_##name##_; \
1648 : StatsCounter count_of_CODE_TYPE_##name##_;
1649 : CODE_KIND_LIST(SC)
1650 : #undef SC
1651 :
1652 : #define SC(name) \
1653 : StatsCounter size_of_FIXED_ARRAY_##name##_; \
1654 : StatsCounter count_of_FIXED_ARRAY_##name##_;
1655 : FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
1656 : #undef SC
1657 :
1658 : RuntimeCallStats runtime_call_stats_;
1659 : WorkerThreadRuntimeCallStats worker_thread_runtime_call_stats_;
1660 :
1661 : DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
1662 : };
1663 :
1664 : void HistogramTimer::Start() {
1665 2680761 : TimedHistogram::Start(&timer_, counters()->isolate());
1666 : }
1667 :
1668 : void HistogramTimer::Stop() {
1669 2680759 : TimedHistogram::Stop(&timer_, counters()->isolate());
1670 : }
1671 :
1672 154966010 : RuntimeCallTimerScope::RuntimeCallTimerScope(Isolate* isolate,
1673 154966010 : RuntimeCallCounterId counter_id) {
1674 309932020 : if (V8_LIKELY(!FLAG_runtime_stats)) return;
1675 19308 : stats_ = isolate->counters()->runtime_call_stats();
1676 19308 : stats_->Enter(&timer_, counter_id);
1677 : }
1678 :
1679 : } // namespace internal
1680 : } // namespace v8
1681 :
1682 : #endif // V8_COUNTERS_H_
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